code: def __iter__(self) -> Iterator[TensorDict]:
      yield from self._outputs
  
imports: import argparse
  import json
  from pathlib import Path
  from typing import Iterator, List, Dict
  from shutil import copyfile
  import pytest
  import torch
  from flaky import flaky
  from allennlp.commands.evaluate import evaluate_from_args, Evaluate
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data.data_loaders import TensorDict
  from allennlp.models import Model
label_desc: Use image node_id 2 for calling the DummyDataLoader obj's underlying member method code with example usage: obj.__iter__() without return types